Ribbon mechanism for type-writing machines.



. i' o. G. KAVLE. RIBBON MBGHANISM FOR TYPE WRITING MACHINES.

APPLIOAT ION FILED SEPT. 4| 1906.

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O. C. KAVLE. RIBBON MBCHANISM POR TYP WRITING MACHINES.

APPLICATION FILED SEPT. 4, 1906.

Patentd Sept. 7, .1909.

o. G. KAVLE. RIBBON MEOIIANISM FCR TYPE WRITING MACHINES.-

APPLIOATION EIIJED SBPT.4,1906. y

. Patented Sept. 7, 1909.

4 SHEETS-SHEET 3.

.L l A l A 1 I.

2. o@ Ma@ l n o. c. KAVLB. 'RIBBON MEGHANISM FOR TYPE' WRITING MACHINES.APPLICATION FILED SEPT. 4. 1906.

, Pamente'l Sept. 7, 1909;

4 SHEETS-SHIJT 4.

In veafw UNITED sTATEs PATENT oEEicE.

OSCAR C. KAVLE, F SYRACUSE, NEW YORK, ASSIGNOR TO HARVEY A EMMIT G',LATTA., 0F SYRACUSE, NEW YORK. l"

Specification of Letters Patent.

Application ined september 4, ieoc. seriaiNo. 333,216.

State of New York, have invented a new and useful Improvement in Ribbon,Mechanisms for Type-Writing yMachines, of which the following is aspecification.

This invention relates more particularly to ribbon operatin mechanismsfor type.-

writing machines o the visible writing` kind in which the ribbon isvibrated to and from the printing position opposite to or over theprinting point on the platen so, that the writing is exposed to Viewexcept when the ribbon is in the printing position, which ordinarily isonly momentarily while the` type-bars are in motion.

The primary object of the invention is to produceadesirable andeflicient mechanism for both feeding and vibrating the ribbon,

which will be of' comparatively simple, du-

rable and inexpensive construction. T

Other objects of the invention may be stated as follows to provide twoink ribbons and vibrating mechanism therefor whereby leither ribbon canbe used or both rendered inactive the simpleinovement of a' controllingswitch or part; to

provide a' simple 'power-driven mechanism for feeding the ribbonlengthwise which will be positive and certain in action, simple inconstruction and require but little power for its operation; to providesimple means for reversing the feed of' the ribbon in whichl successivelike movements of the same' part will reverse the feed of the ribbonregardless of the direction of movement of the ribbon; to provide meansto pre- 40 vent the tearing of the ribbon from the spools; and to adaptthe ribbon vibrating y mechanism to machines in which the platen isshifted to print different case characters. Still another object of theinvention is t improve ribbon-operating mechanisms for typewritingmachines in the respects hereinl'after described and-set forth in theclaims. lIn the mechanism formin the subject of this invention tworibbons o diferent characterv are employed, `'enabling the production ofdifferent sorts of writing, forinstance,

v they may be of different colors, or one may;

be a record and the other a copying ribbon.

I., 'Ehe tvvp ribbons are `arizanged face to face,

that is, one over or in front of the other, and are attached at theirends to a single pair of-spocls and simultaneously lwound from one spoolonto the other in the usual manner of feeding a single ribbon. Theribbons, however, pass through separate vibrating guides, or vibrators,near the printing point and both of these vibrators can be renderedinactive to hold both ribbons out of operative position, so as to exposethe printing point and enable the use of the niachine for stencilcutting, or either vibrator, at will, can be placed in action to vibratewhichever ribbon itis desired to use, While the other vibrator andribbon remain inactive below or away from the printing point.

While the mechanism is hereinafter described and shown in the drawingsas constructed for feeding and vibrating two ribbons, it is to be notedthat either of the de- ,vices for feeding the ribbons or for vibratingthe ribbons are equally adag'rted for operating a single ribbon.

In the accompanying dranf'ings, consisting of four sheets: Figure 1 is afragmentary longitudinal sectional elevation of a front striketypewriting machine provided with riblninoperating mechanism embodyingthe invention. Fig. 2 is a plan View, partly in Morne i AND PatentedSept. 7, 1909.

section, line 2-2. Fig. 1, of the ribbon,

`feed mechanism, the operating ratchet wheels for the ribbon spoolsbeing partly broken away to disclose the underlying parts. Fig. 3 is alongitudinal se'ctional ele- 'vation of the ribbon feed mechanism inline '3--3, Fig. '2. Fig. 4 is a transverse sectional elevation thereofin line L -"l, Fig. Fig. 5

is a fragmentary section, on an enlarged scale, of the ribbon reversingmeans. Figs. 6, 7 and 8 arev cross sectional elevations thereof inlilies. 6 6, 7--7 and 8-.-8, re-

spectively, Fig. 5.I Fig. 9 is a detail sectional plan of the clutch forconnecting the,

ribbon 'spool to its shaft. Fig. 10 is a front elevation, partly insection, in line 10--10, Fig. 1, of the ribbon vibrating mechanism.

Figs. 11 and 12 are 'front elevations of the.

two ribbon Vibrators detached. 13 is a fragmentary sectional elevationo' the vibrating mechanism, on an enlarged scale, in line it-13,Fig."10. Figs. 14, 1,5 and 16 are horizontal sectional plans thereof inlines 14-14, 15,-15` and 16-16, respectively, Fig. .13. Fig. 17 is 'asectionalplan of ribbon vibrators and their cont-rollin switch-lever,showing the latter in a d1 erentposition from thatw-hich it occupies inFlg. 16.

Like letters of reference refer to'y like parts.

the carriage by means not shown, for .ca-usl ing the horizontaltravelthereof, -D .the

finger key levers for actuating the typebar's, one of which with itsconnections to the `key lever is shown by dottedjlines at E in Fig. 1..

These parts in'ay be of any usual or suitable construction, but. the topfplatea is preferably secured to themain rame in any suitable mannerenabling itto be detached. with the parts carried-thereby.' Y'

The machine illustrated is of thatl kind in which the type-bars carrytwo -sets' of type, and the platen is norma ly in println relation tothe lower case type and is shifte 'into printing relation to the uppercase type,

and the carriage for this purpose travelsin guides f on a shift frame Fwhich is pivoted at f tothe rear ortion of the to of the main frame toosci late vertically. he shift frame does-not partake in the horizontal'travel of the-carria e but is -simply capable of swinging up and down toshift the' lcarriage-and platen.' It can thus be raisedand lowered byanysuitable means, such, for in',

as stance, as a pitman f2, Fig. 1, connecting'a slotted front extensionf3 of the shift'frame with a lcrank disk f* whichis oscilla-ted by agearpinion' f5 thereon meshin toothed segment f secured to a roc shaft f 40'provided at opposite ends with rock arms 'actuated by rocking shiftlevers at opposite sides of the machine. One shift lever and one rockarm'are shown atj*l and f respectively,^Fig. 1. This mechanism forshifting the carriage is fully described in the ap- 'plication of G.Latta for typewriting machines, filed June 14, 1905, l\0. 265,217, and afurther 'description thereof herein is unnecessary G G represent the twoink ribbons, which, as'before stated, are arranged face to face or onein front of the other, and are attached at opposite ends'to a pair of sools H H which lare preferably arranged above the top plate aof theframe at opposite sides of thefront portion thereof` on upright shaftsh' 71. journaled in suitable bearings h2 on the top plate. These spoolsare operated by feed mechanism to be hereinafter described, to wind the'ribbons slmultaneously onto one spool -fromfthefoth'er'in the -sajnemanner as if a single ribbon' connecting the spools were employed. Theribbons pass through stationarv guides z' of suitable construction,

y "655 one of which'is shown in Fig. 1, located adand means are providedeither, vibrator independently of theother I jacent to the spools, andthrough separate. 'vibrating guides, or vibrators K K', Flgs.

l and 10-15, arranged vertically one in front" ofthe other adjacent tothe printing point of the platen. These vibrators are arranged .tonormally hold the ribbons `down below the printingpoint so as toexpplserippiatplg to vibrate lwhichever ribbon it is desired to use toand from printing position between the printin point of the platen andthe typebars. Eac

vibrator, see. Figs. 11 and 12, preferably consists of a piece of sheetmetal having aat 'body portion with side wings 80 or parts at its upper.end bent .to form o en .guide loops 7c for the ribbon extending orwardlyat an angle fromthe body portion .toward the ribbon spools and se aratedby .anQintervening slot or opening w ich allows 85 lthe type to Vstrikethe ribbon.

The guide loops of the rear vibrator are s laced farther a art Vthanthose ofthe front yi rator so that 't e two vibrators can' be arrangedclose together, one infront of the other, as shown 1n Fig. 15, and onereci rocated without inL terference with the ot er. Each vibrator has atone` side a `depending legprovided at its lower end with a lateralpro'eotion' ory foot k. ,These feet project lateral y toward cach otherbut are separated by an intervening space, and thefleg of the front.vibrator is preferably bent rearwardly somewhat to place both feet inline opposite to each other,

4see Figs. 1,3, -16 and 17. The vibrators are 100 arranged to slidevertically '1n guide grooves or ways Z, Fig. 14, vin a suitable uprightsupport or bracket Z, Figs. 1, 10 and 13-15 having rearwardly projectinarms secure 'by rivets'Z2 or. otherwise in t e slotted front`105extension f3 of the shift frame.' The bracket Z and vibrators arellocatedin frontv of the Scale bar.` Z8 vof the carriage and arepreferably provided with registering openings through which the scalebar can .be seen. The .opening ofl the. brackethas beveled edges, and across wire Z", Fig. 10, is preferably provided in the opening whichcontrasts in color with the ,scale bar and serves as a center index orprinting point indif' 115 cator. The vibrators could 'beconstructe'd andmounted on the shift frame in any other suitable manner.-

' M, Figs.- 1, .10, 13,16 and 17, 'represents a lever pivoted intheslotted front extension f of the'shift frame a'nd havin fahorizontally projectin arm with aooked end which extends hetween thelegs of the two. vibrators and bearson the two feet thereof.

A switch lever or sorin m is pivoted at its rear end in aslot 1n t evibrator lever M and extends horizontally beneath the hooked armthereof, having its free end bent to form a loop or handle by which itcanbe swung either vibrator, 'or in a central yposition between thevibrator feet. The switch is narrower thanV the distance between thevibrator feet, and when placed vcentrally it will pass upwardly betweenthe feet when the vibrator lever is oscillated without lifting eithervibrator, whereas if it is shifted laterally' to one side beneath thefoot of vibrators can be rendered inactive or either one .desired can beput in operation. Thel vibrator lever will hold both Vibrators down whenat rest in its lower position, and will always draw down either vibratorwhich might be raised, but it will not lift either vibrator when theswitch spring isvplaced centrally. The switch lever can lbe held fromaccidental movement by frictional contact with the vibrator lever, or inany other convenient manner.

The vibrator lever is operated in the machine illustrated by thefollowing means, see Figs. l, 2 and 10: The lever has a depending armconnectedfby a link n to an arm u secured to and projecting upwardlyfrom the. central portion of a horizontal rock shaft n2 journaled at itsends in suitable bearings in the sides of the frame A. The rock shafthas forwardly projecting rock arms n3, Fig. 2, near lits ends from whichis pivotally suspended a universal bar N arranged horizontally below thekey levers. The universal bar is engaged and depressed by each key leverthat is moved to operate a type-bar, and oscillates the vibrator leverthrough the described Connections. Unless the vibrator switch is in acentral position one of the vibrators will thus be raised and the ribboncarried thereby placed in position to be struck by the type-bar to makean impression whenevera type-bar is actuated, and the vibrator willagain lower the ribbon to expose the writing when the key lever isreleased and the type-bar returned. A spring a* is connectedto theuniversal bar at any suitable point for restoringthe same and the' otherparts of the vibrating lmechanism to the normal position. lThe universalbar N has no connection whatever with the carriage escapement and aseparate and distinct universal bar N', Fig'jl, isemployed for operatingthe escapement which. is indicated at. X2. This second universal bar isprefer-l ably of that sort arranged near the type-bar segment to beoperated' by the type-bars when near theliniit of their excursions tothe platen. Actuators N8are shown in Fig,- 1 -zorti'ansmit-tingmotionfrom the type-bars to the universal bar N for rocking it to operate theescapenientl This escapement could, however, be varied without departingrack bar has-a depending fpart actuatingF mechanism thus brieflyreferred to and shown iii Fig. l forms netpart 'of thai presentinvention but is fully disclosed in my -prior application, Serial No.320,541, filed June 7 1906. '.l`he=nniversal bar N for the vibrators ispreferably located somewhat below the lower edges of the. key levers, asshown in Fig. 1, so that .the key levers can be depressed far enough tostart the type-bar actions before the 'universal bar is engagedl and.moved to operate the vibrator. The type-bars are preferably operatedwith an accelerating motion, but. the ribbon vibrator has a uniformmotion which enables the ribbon to reach the printing position at theproper time without danger of the vibrator slipping up on the ribbon,an'd the wear in the vibrating mechanism is lessened, andthe mechanismis preferably so timed that the carriage escapement is not operateduntil after .the ribbon reaches the printing position. As the vibrators.and their operating lever are mounted on the shift frame I" they areshifted with the platen and their relation to the platen remains thesame, but the uni- `versal bar N and rock shaft u2 are supported 1 bythe main frame.

Therefore` to insure ractically equal movements of the vibrators in bothpositions of the shift frame, the vibrating mechanism is .soproportioned and arranged that the link n' will occn y the full lineposition, shown in Fig. l, be ow a line passing through the pivotjoining the link to the rock arm n and the pivotal axis of theshift-when the shift frame is in its lower position, and will cross saidline to the position shown by broken lines in said Fig. l when the shiftframe is raised.v By this ar-A rangement of the link a the movement-sthereof by the rock arm will be substantially similar in both positionsof thelink and consequently substantially equal movements of thevibrators will be produced in both positions of the shift frame. Thissame vibrat-r ing mechanism could be used for operating a singlelvibrator 'for one ribbon. The arrangement and -construction of the twoviin the manner described, whereby either of two ribbons can be used orbot-h allowed to lremain inactive out of the path of the type,

from the invention.

' The mechanismfor operating the ribbon spoolsto feed the ribbonslengthwise 'is preferably constructed as follows: O, Figs. 1,

3 and 4, represents a gear pinion which is 12e, sec'ured to thecarriage-drivin sprin drum and meshes with atoothe rack whichisjirlovablecrosswise-of the machine .in -a' guide slotl p in Ytheframetop plate a. The 'n lsprvided 12a with a socket :oropening' seate on .a,reducedcylindrical party of a horizontal feed. bar-Q which is arrangedbelow the to vplate a -and'v is reciproeated with' the. racz Jaar. ,Thefeed bar has acyliiidricalportion-at one .pending from the top plate ain W ich the' bar is adapted to sllde and. turn, and the shapedportionlnear its opposite end and twoop'posite ledges of each crossshaped .por-

tron are? smooth and the other two opposite edges have 'teeth g4 withinclined and abru t faces. fThe abrupt4 faces of the .20 saniedrection,but` the teethfat one end of teeth at'` oth-end'sflofthe `rod-face inthe.

l' therodzxar disposed in a plane atright ari-L glee with. respect to'the teeth at the other end] of the rod.'V that is, theteeth atonefend"offv .the rod will'o extend. horizontally there# 'frein-while the Vteethat;thefptheryend `the rod extend vertically. By'A tuul'fnlg. the'toothed edge at oneend of the rod'a'nd'tler'r;

rod will beplaced ld ovvnwaial,."vvhieh'is 'the operative. position.-Af'flat spring-"g5, Figs.V

5 and 6,' securfxl' at one ,endof'the' underside ofthe top plateandbearing at-its free end against a. rectangular part of `the-sleeveservestofhold the 'sleeve an rod stationary .'butgallovvsl itto be yturned. bythe applica-- tion of alittle force.

' RR. Figs. 1-3, represent 'two ribbonA feed levers fwhich arepivotedbeneath the top w platev dat opposite sides of the machine in.any suitable manner, preferably on shouldered screws rdependingfrom-.the to plate.' The rear ends ofthe levers extend enea'th and lare'h eld yieldinglyup by their resilience;agains t the cross-shaped partsat the i opposite endsl of the feed bar and have upwardly directedteeth. oredges-1" for en- ,5d gager'nent with the teeth on thefeedrbar.`

The other ends of the levers are provided with toothed segments# r3meshing with.l toothed segments on pawl levers- S S jouw.. naled tooscillate on the lower lends of the. spool shafts h L respectively. The.pavv'lv levers have, pawls 8 pi'voted thereto which coperate withratchetwheels s secured to the' spool shafts to turnthe spools. The

y free ends of the pawls are pressed toward the ratchet wheels, forinstance, by springs s2 connecting the pawls to the pawl levers. and

the heels of the" pawls are adapted to strike fixed stops,A such as pinss3 depending from the top plate a, to limit the returnlnovenients of thepawl levers and swing the f ree ends of the pawls out of engagement Withthe teeth of the ratchet wheels. The pawl levers are oppositely arrangedand the segment r2 of one of the feed.levers R extends infront of itsspool shaft and is internally toothed while the'othersegment is locatedin rear .of its spool shaft and is externally toothed, wherebythe'movements of the rear ends of the feed' levers in the same directionwill turn the spools in opposite directions. Suitable returns rings s4are provided for moving the feed evers in the directionopposite. to thatin which they are moved by the-feed bar. y

The' lfeed .bar is reciprocated with the platen carrie e by the toothedrack and -`pinion, and w en it is in the position shown 1n Figs. 2 and 4one of tlre toothed edges at its left-hand end will be in engagementwith'the left-hand feed lever which will reciprocate with the `feed barso that the ratchet and pawl actuated thereby will slowly l turn-thelleft-hand spool upon each travel of the carriage to the left in writinga line, and the' pawl will ride backwardly over the ratchet 4Wheel to,take a new hold each time the carria eis set back. the other. eed leverIt", however, will bear f against one of the smoothedges at therightvhandl end of'the feed bar and will not be reciprocated thereby butwill'be held by its springt s4 in the positionshown-in. Fig. 2, .withlts pawl against the back-stop s and Thel rear end of 'out -ofengagement with the ratchet wheel l for the rightehand spool so as notto inter- -fere with .the backward rotation of this spool. Theribbonswill thus be wound onto *the left-'hand spool from the other one,or fed one direction as long as .the feed bar Q remains in the positionshown. Vhen it is desired to reverse the feed of the ribbons, .thefed'bar is turned onequarter of a revolution, which turns oneof the.toothed edges at its right-hand end' down into enga ement "wit'htheright-hand feed lever R w ereby thislever will be bron ht intoactionWhile the other'feed lever wi l bear against one of the smooth edges atthe left-hand end of the feed rod and will be retracted by its spring.s4 to .the position shown in Fig. 2, with the pawlactuated'therebyagainst its stop and out of engagementwith its ratchet wheel. W hen thefeediba'r is now reciprecated with the carriage theleft-hand feed leverwill remain' inactive and the ribbon will be fed in the'oppositedirection by theright-hand feed lever. One feed lever is thus alwaysinactive with the pawl. actuated thereb against its stop and outofengagement witi v .its ratchet` wheel so as notl to interfere withtheunwinding of the ribbons from the spool operated tliereby,.blitthelever which is in operation 'will only assume this position .when thecarriage isfset back to the full limit of its travel, whichwillnot-occ'ur when the lefthand marginI stopgisset for paragraphing orfor producing the usual margin at the left-hand edge of the sheet, andthe pawl which is in action will ordinarily, therefore, be in operativeengagement .with its ratchet wheel ready to t-urn the spoolr upon anymovement of the carriage to the left. By providing a number of teeth oneach toothed edge of the feed bar, the latter can be turned in anyposition of the carriage and one feed lo lever will always be engaged byone of the teeth on the bar. If the ribbon is-reversed when the carriageis at the left, the feed lever which is thrown 'intoaction w-ill simplyoverrun the teetli of the feed bar when the' carriage is set back to theright, and if the feed bar is turned in an intermediate position of thecarriage one feed lever will intercept the nearest ytooth on the feedbar and will be driven thereby until the carriage is 2o set back,'whenthe lever will overrun the teeth 'and assume the proper position for thenext line. 4 I

A friction washer T of any suit-able kind preferably surrounds eachspool shaft be tween its bearing and the ratchet wheel to` prevent thespools from turning too freelyis simple, and occupies but little spaceunder the top plate of the frame by which it is protected from dirt andinjury, and it can be readily assembled on the removable top plate orremoved therewith from the machine for repairing,` It eliminates theusual expensive train of bevel gearing. The feed mechanism could be usedfor a single ribbon without change except that smaller spools could beemployed. This same mechanism could also be used in connection withvibrating means different from those described'. Different means couldalso be used for transmitting the movements offeed levers ,actuated by areciprocating feed rod in the manner described to' the ribbon spools,and the construction'-offthe feed bar and Ivman'nerof mounting the sameand the ,means for reciprocating the 'bar could also differ w'ithoutdeparting from theinventi'on, ,l

following means: U, l1`ig."`1 a push rod arranged horizon y,y ot'tl'iemachinc to slidef'in suitable; `bca'ri1'1g-s on they frame Aandliavingfa p `tension adapted to engage aratchet'wh'eel u.

having four teeth formed onffor securedto th( bearing sleeve q2l fortheffeed bar.. The

` 1 A slhbutton fu atl its front end byfwhichht` caiifbe pushed? Y: srearwardly. The rodfhas a.""fl',e'x1ble` rear ex-V lreturned tov thisposition after actuation by a suitable spring u2, Figs. 1-3, secured tothe front of the frame A and bearing against the rear end of the pushbutton. Each time the push rod is pushed rearwardly its rear end willengage the ratchet wheel u and turn the bearing sleeve g2 and feed barone quarter of a revolution, and by reason of the described constructionand arrangement of the feed bar and feed levers a different lever willbe thrown into action and the ribbon fed ina different direction eachtime the push rod is pushed rearwardly. The ribbon is thereforereversed, no matter which way it has been feeding, by-a rearward or likemovement of the push rod and the operator does not have to ascertain thedirection of movement of the ribbons, or the position of any of theparts to reverse the feed. Any other suitable device for turning thefeed bar to reverse 'the feed could be employed.

n In order to prevent the tearing of the ribbons from the spools, eachspool is preferably releasably coupled to its shaft so that the shaftcan turn independently of the spool in case that the operation of themachine and feed mechanism is continued after the ribbon. is completelyunwound from the spool. The coupling shown, see Figs. 1-8-9, consists ofa collar V having Hat sides surrounding and adapted to turnl on anenlargement o on the spool shaft, also having ldat sides, and laU-shaped Spring o which embraces the collar and bears against the flatfaces ofthe enlargement. The collar has a. pin v2 which enters a hole inthe spool to turn the spool. The spring e will cause the collar andspool to turn with the shaft unless an undue strain is placed upon theribbon and spool,when the springwill yield and allow the shaft to turnin the collar without turning the latter' and the spool.

I claim as my invention:

l.' In a typewriting machine, the combination of a universal barcontrolling the carriage escapement, and a ribbon vibrating 'mechanismindependent of said universal bar andl constructed to move the ribbon to`the printing position with a substantially l uniform inotion in advanceof the operation of said universal'bar, substantially as set y l, forth.

The feed barV is turned,`as"explaine'd, for 55 reversing the ribbon feedp r terab'l-y,l by. the.

2.v In a typewriting machine, the combination of a universal barcontrolling the carriage escapement, land ribbon vibrating' mechanismincludinga second universal bar which is actuated to place the ribbon inprinting position in advance of the actuation of llaid universe lbar for,the carriage escapement,substantially as set' forth.

3. In a typewriting machine, the combination of type-bars, key leverstherefor, a carriage escapemcnt, a universal bar for the carriageescapement actuated by the' imment and 4is actuated by the key levers.for vibrating the ribbon with a substantially uniform movement,'substantially as set forth. 4. In'a typewritin machine, the combinationof a pivoted sli'i t frame supporting the i platen, aribbon vibratorsupported by said shift frame and movable therewith to main-A tainsubstantially the same relation to the platen in different positionsofthe shift frame, an `actuating rock arn'i for the vibrator having afixed pivotal support, a link connected' at one end to said rock arm,and

'a lever pivoted on thes'hift frame and connected to the other end ofsaid .link and to the vibrator5'said link being movable when the shiftframe is' oscillated across a line passing through the pivotal axis ofthe shiftframe and the joint connecting said link and rock arin wherebysubstantially like move nients of the vibrator are produced in differentpositions of the shift frame, substantially as set forth. In atypewritingl machine, the combination of a platen which is` shifted forprinting different case characters, `an upright front of the other andhaving opposite spaced bracket-which is -shifted with the platen,l a'

ribbon vibrator slidably supported on-said 'bracket, and means forslidingthe vibrator substantially equal distances on the bracket inditi'erentpositions thereof, substantially as set forth.

6. In a typewriting machine, .the combination of a movable shift framesupporting the platen, a ribbon vibrator supported by said shift frameand movable therewith to. maintain substantially .the same relation tothe platen in Adierent positions of the shift frame, said vibratorbeingmovable vertically .toward and from printing position, a leverpivoted to said shift frame and connected to said lever, substantiallyas set forth.

7 In a typewriting mach-ine, the combination of a shift framey pivotedat its rear'to oscillate vertically', a platen supporting car-- riagewhich travels laterally on'said shift frame, a rigid bracket at thefront central porti-on of said 'shift franie, a ribbon vibratormovableon said bracket, a lever. pivoted on said shift frame andconnectedv to the Vibra- 'uide v for each ribbon, a common actuating.

evice for said guides, means for causing said actuatingdev-ice tovibrate any one of said guides separately towai'd and from the printingposition, and means independent of said actuatin device for niovablysupporting said gui es,`snbtantial1y as set forth.

933,1 sr t 9. In a typewriting machine, the combina- Vibrators forsaidribbons, and means for actuating one of said vibrators which normallyholds both ribbons out of printing position, substantially as set forth.

10. 'In a typewriting machine, 'the combination of two ribbons arrangedone in front of the other adjacentto the printing point, independentlymovable vibrators for the ribbons, means forniovably supportinff saidvibrators and retaining themvertica and a-n operating device independentof said supportingl means -which is separately connectible to saidvibrators, substantially as set forth.

11. In a `typewriting machine, the combination of a attached to saidspools, and two ribbon vibrators arranged one in front ofthe other andhaving guide Wines vdirected toward space 'farther apart than those ofthe other vibrator, substantially as set forth.

. 12. In a `typewriting machine, the combination of two ribbons, ltwovibrators for said ribbons arranged to. reciprocate onein projections, alever bearing on said projections to movesaid vibrators in onedirection, and a part on said lever movable to a position .between saidprojections o1' opposite to either projection for moving one of saidvibratorsin the opposite direction, substantially as set forth. l

13. In a typewriting machine, the combination with a carriage anddriving means said driving means, ribbon spools, pivoted leversoperatively connected to said spools for transmitting motion. theretofrom said reciprocating bar. and means for operatively connecting one ofsaid levers to said reciproeating bar, substantially as set forth.

14; In a typewriting machine, the com bination with a carriage anddriving means therefor, of a bar which is reciprocated by saiddiiviiigmeans, ribbon spools, pivoted levers operatively connected tosaid reciprocating bar, and ratchet and pawl mechanism between saidlevers and spools, substantially as set forth.

15. In a typewriting machine, the combination 4tvith a carriage anddriving means therefor, of a gear wheel driven by said earriage drivingmeans, a rack bar reeiprocated by said gear wheel, ribbon spools, andpivoted leversoperatively connected to said spools for transmittingmotion thereto from 'said rack bar, and means for operatively connectingone of said levers to said rack bar, substantially as set forth.

nation with a carriage and driving means therefor, of a bar which isreeiprwaied by tion of two ribbons, independently movable air of spools,two ribbons' said s ools, the wings ofP one vibrator being l 16. ln atypewriting machine., the eonibiy therefor, of a bar which isreciproeated by l casa-si said driving means, ribbon spools, pivotedllevers operatively connected to said spools for. transmitting motionthereto vfrom said j levers opera-tively connected to said spools torotate said spools in opposite directions by' movements of the levers inthe same. directions, and means'for operatively connecting one of saidlevers to said reciprocating j bar, substantially as set forth.

18. In a typewriting machine, the `combination with a carriage anddriving means therefor, of a bar which is reciprocated by said drivingmeans, ribbon spools, pivoted levers operatively connected to saidspools to rotate-said Ispools in opposite directions by movements of thelevers in the same direction, and means for operatively connecting saidlevers separately to said reciprocating bar whereby like movements ofthe bar Will produce opposite. notations of said spools, substantiallyasset forth.

19. In a typewriting machine, the combination of ribbon spools, pivotedlevers operatively connected to saidspools for rotating the same, anadjustable reciprocating bar constructed to operatively engage one ofsaid levers in one position of the bar to drive one spool and in anotherpositionl of the bar to operatively envage the other lever to drivey theother spoof substantially as set forth.

20. In a. ty eWrit-ing machine,the combination of rib on spools, pivotedlevers operatively .connected to said spools for rotating the same, anadjustable reciprocatingl baradapted 'in one position thereofto'operatively en age one of saidlevers to drive one spool andr releasethe other lever and spool, and in another vpositionv to release thefirst lever and spool vand operatively engage the other lever to drivethe other spool, substantially as set forth.

21. In a typewriting machine, the combination with a carriage anddriving means ,A therefor, of ribbonspools, a bar which is reciprocatedby said driving means, centrally pivoted. levers eachoperativelyconnected at one end to one of said spools for transmittingmotion thereto from said bar, and means foi operatively connecting theopposite end of one of said levers to and disconnecting the opposite endof the other lever from said bar,substantially as set forth.

22. In a ty ew'riting machine,the combination of riblbon spools,centrally pivoted feed levers one having an externally vand the other aninternally toothed segment, pawl levers connected to said spools andhaving gear segments meshing with the toothed segments of said feedlevers, a i'eciprmratiug bar, and means for operatively connectingsaidfeed levers alternately to said bar. substantially as set forth.

23. In a typewriting machine, the combination of ribbon spools, pivotedlevers operatively connected to'said spools, arecipioeating bar havingteeth for engagement with said levers, and means for engaging one le verwith the teeth onI said bar and disengaging the other lever from saidteeth, 'substantially as set forth.'

24. In a typewriting machine, the combination of ribbon spools, pivotevdlevers opleratively connected to said spools.v a recipro-` catingrotatably adjustable bar provided With means for engagement with saidlevers, means for turning said bar to different positions for engagementfirst with oneof said levers and then With the other, and means f forreleasably holding said bar in different' positions, substantially setforth.

25. In a typewriting machine, the combinationivith a carriage, anddriving means therefor, of ribbon spools, pivoted levers operativelyconnected to saidspools, a bar rcciprocated by said carriage drivingmeans,

a rotatable feed bar connected to said recip-` rocatin bar and havingteeth and'smooth edges or engagement With said levers, the teeth beingarranged to engage one lever in one position of the bar and the otherlever in the other position of the bar. and means for rotatablyad'usting said feed bar, substantially as set orth.

26. In a typeWr'iting machine, the combination of ribbon feeding means,and reversing means therefor, including a push-rod which is moved in thesame direction1 to reverse the ribbon feed regardless of the directionof movement of the ribbon, substantially as set forth.

27. In a typevvriting machine, the combination of ribbon feeding means,and reversing means therefor including a push-rod which has an endwisemovement only and reverses the ribbon feed upon successive movementsthereof in the same direction regardless of the direction of movement.of the ribbon, substantially as set forth.

' 28. In a typewriting machine, tihe combination of ribbon spools, afeed rod and connections for rotating said spools, said rod beingrotatably adjustable for reversing the movement of the ribbon feed, anda pushrod for turning said feed rod, substantially asset forth. j A 29.In a typetvriting machine. the combination of a main frame whichsupports the type-bar action and is provided with a reyvholly by saidtop plate and is removable therewith froml the main frame, substan#tiallvs set forth.

3b..'lhe eombinationof a ribbon, ribbon,` spools, means for'pdriving thesame, and connections between the spools and`dr1ving.

means for releasing the spools therefrom under abnormal strain on theribbon to -prevent tearing the ribbon, substantially as s et forth.

3l. The cOmbiDatiOn 'of' a a' spool shaft, a collar journaledon'sa-id'shaft and connected to said spool, a spring which lis connectedto aid ,collar and bears against a Hat face on s id shaft to cause the4collar to turn with saidllshaft except -when subject to abnormalstrain, substantially asset forth.

32. In 'aA typewritingmachine, the vcombilnation of ribbon spoolslocated at.the front l .portion of the machine, horizontally swinginglevers arranged at opposite sides of the machine, operative connectionsbetween said levers and said -spools, and means at the rear portion ofthe machine for operating said vlevers to drive one or the other of saidspools,

. substantially as set forth.

33. In a typewriting machine, the coi'nbi- I nation of ribbon spoolslocated at the front portion of the machine, levers at opposite.

sides ofthe upper portion of the machine which extend rearwardly fromsaid spools,

foperativ'e connections between said levers 'and said spools, andpower-actuated means .frontportionof the machine, horizonta ly Swinginlevers arranged at opposite sides of the mac ine beneath the top platethereof, operative connections between said levers and said spools,'andmeans at the rear p0rtion of the machine actuated by said car- '-riagedriving means for operating said le- 'vers todrive one or the otherof snld spools,

substantially as set forth.

Witness my gust, 1906.

. OSCAR e. Kaviar..

Witnesses CHESTER W. REID, OTTO A. SCINLLY.

hand, this th day oli Au-

